Cutter-head.



C. J. KLINGBORG.

CUTTER HEAD. APPLICATION FILED MAY 2. 191-4.

Patented Apr. 27, 1915.

0" T M V W WITNESSES Cir-Z M BY W A TTORNE Y rHE NORRIS PETERS c0.. PHOm-LITHQ. WASHINGTON, D c.

CARL ."LKLINGBQRG, or snarrnn, WASHINGTON.

I CUTTER-HEAD.

Specification of Letters Patent. Patented AIM-.27, 1915.

Application filed May 2, 1914. Serial No. 836,025.

To. all whom it may concern:

Be it known that I, CARL J. KLINGBORG, citizen of the United, States, residing at Seattle, inthe county of King and State of Washington, have invented a certain new and useful Improvement in Cutter-Heads, of which the following is a specification.

My invention relates to improvements in cutter-heads of that'class embodied in wood working machinery which is generally employed informing lumber to adapt it for use as wainscoting, shiplap, flooring, siding, ceiling and the like, and the object of my improvement is to proi ide a cutter-head which shall-be adapted to hold securely a larger number of cutters in proportion 'to its circumferential dimension and in which such cutters may be quickly adjusted to their required positions and which, further, is provided with a removable chip-breaker that is adapted to be readily adjusted to a required position. I accomplish this object by devices illustrated in the accompanying drawings wherein r Figure 1 shows a top cutter-head embodying my invention by a view partly in elevation and partly in cross-section on broken line A, A of Fig. 2; Fig. 2 is a view in cross-section of the same on broken line B, B of Fig. 1; Fig. 3 is a view in perspective of a wedge-like member embodied in my invention; Fig. 1 is a view in perspective of a chip-breaker embodied in my invention; and Fig. 5 is a view of one form of a side cutter-head to which my invention has been applied.

Referring to the drawings, throughout which like reference numerals indicate like parts, 8 is a horizontally disposed cutterhead or blade cylinder of a form commonly known as a top or bottom cutter-head and such cutter-head 8 is provided on each of its ends with concentrically disposed arbors 9 which may be rotatably mounted in suitable bearings (not shown) and one of which may be connected with any suitable source of power by which such cutter-head may be rotated. The periphery of the cutter-head 8 is provided with longitudinal grooves 10, as more clearly shown in Fig. 2, within which grooves 10 are disposed cutter knives 11 and chip-breakers 12, such knives 11 and chip-breakers 12 being secured within the grooves 10 each by a tapering wedge 13, one side of which is adapted to engage withthe wall of its groove 10 and the other side of which is adapted to engage with an inclined surface 14: on the shank of its'chip-breaker 1.2 to bind said chip-breaker 12 and knife 11 within the groove 10. The wedges '13 are .each provided on one end'with an enlarged portion 15 within which is formed a threaded hole 16, into which an adjusting bolt 17 is adapted to screw, which adjusting bolt 17 passes through a circular plate .18, that is disposed on the arbor 9 and secured to' the cutter-head 8 by bolts 19, and such bolt. 17

is provided with a collar 20 which isadapted to fit within a suitable recess 21 on the inside surface'of the plate 18 to prevent endwise movement of such bolt 17 within such plate 18, the cutter-head 8 being provided on-its' i other end, opposite to the plate 18, with another plate 22 that'is secured to such cutter-head by screws 23 to prevent endwise movement of the chip-breaker 12 and knife 11 whenthe wedge 13 is'inserted to bind such chip-breaker 12 and knife 11 in their proper positions. The knives 11 and chipbreakers-12 may be placed within the slots 10, as shown in Figs. 1 and 2, and the wedges 13 may then be introduced in such manner that the backs of the wedges will engage with the walls of their respective slots 10 and the inclined surfaces of the wedges will engage with the inclined surface 14 of the chip-breakers 12 whereby when a wedge 13 is moved endwise away from the plate 18 by turning the bolt 17 then the chip-breaker 12 and knife 11 will be securely bound within the slot 10 and when such wedge is moved toward the plate 18 by turning the bolt 17 in an opposite direction the chip-breaker 12 and knife 11 will be released.

In Fig. 5 I have illustrated my invention as applied to that type of cutter-head known as a side head, which type is commonly employed in forming the edges of matched lumber, as tongued and grooved flooring, ceiling, siding, shiplap and the like. In such Fig. 5, 25 is a cutter-head that is provided with a plurality of knives 26 of any desired form, which are adapted to be secured within the head 25 by chip-breakers 27 and wedges (not shown) which are similar to the chip-breakers 12 and wedges 13 hereinbefore described, and which operate in a similar manner to bind the knives 26 in their correct positions, the head 25 being of shorter length than the head 8 and being provided at one end only with an arbor 29 that may be disposed in a vertical position and by which it may be rotated.

In the form of cutter-heads commonly used the chip-breakers are formed integral with the heads and the blades are secured to such heads by bolts or screws located within grooves extending lengthwise of the periphery of such head thus each cutter or blade occupying a large portion of the pehead instead of being rately and may be replaced by new ones when they are worn out without renewing the-entire head, and moreover, the adjusting screws are disposed at the end of such disposed within the periphery thereof thus making it possible I to secure a-large number of knives in a blade cylinder of relatively small diameter.

Obviously changes may be made'i n the forms of various details embodied in my cutter-head without departing from the spirit of my invention or sacrificing any of its advantages.

What I claim is: I

1. In a cutter-head, the combination with a blade cylinder having longitudinal slots in the periphery thereof, of blades disosed to extend lengthwise in said slots with their cutting edges projecting out- Gopies of this patent may be obtained for five cents each, by addressing the wardly from the periphery of said cylin der; chip-breakers associated with each of 36 said blades; wedges to engage with said chip-breakers and with the walls of said slots, a plate secured to the end of said blade cylinder and spaced therefrom; and

adjusting bolts associated with said plate 40 and disposed each to screw into an end of a difierent one of said wedges to move such wedge lengthwise within its slot to clamp a knifeand a chip-breaker within said slot.

2. In a cutter-head, the combination with a blade cylinder having longitudinal slots in the periphery thereof, of cutter knives disposed in said slots; chip-breakers disposed in said slots adjacent said cutter knives; wedges longitudinally disposed to engage with said chip-breaker with the sides of'said slots, a plate secured to one end of said blade cylinder,-bolts extending through the plate and engaging the wedges for moving said wedge endwise within said slots;

and a plate associated with the opposite end of said cylinder to prevent endwise movement of said chip-breakers and said cutter knives when said wedges are moved.

In witness whereof I hereunto subscribe my name this 21st day of April, D., 1914.

CARL J. KLINGBORG.

Witnesses:

FRANK WARREN, F. G. MATHENY.

Commissioner of Patents,

Washington, D. C. 

